GMS Event Framework usage example

//initEventTypes script
EventTypes { MOUSE_CLICK, KEY_PRESS, GAME_WIN, SCORE_REACH_9000, SIZE }

//Any instance
listen(EventTypes.SCORE_REACH_9000, sayOver9000)

//Instance responsible for score tracking
if (score > 9000) emitEvent(EventTypes.SCORE_REACH_9000, [score])

//Script sayOver9000(eventData)
var eventData = argument0
var score = eventData[0]
show_message_async("IT'S OVER 9000!!! Your score is: " + string(score))